x402basequality 0.35

x402-gated account balance endpoint on Base, paid per-call in USDC.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/accounts/14/balance

What it does

This endpoint at lowpaymentfee.com provides a "Premium API Access" resource at the path `/api/v1/accounts/14/balance`. It is part of a broader platform that offers dozens of pay-per-call API endpoints spanning data analytics, AI/ML inference, finance/Web3 data, and utility services — all gated via the x402 payment protocol on the Base network.

The specific endpoint probed returns an x402 challenge requesting payment in USDC (contract `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913` on Base) with a `maxAmountRequired` of 20,000 base units. Since USDC uses 6 decimals, this translates to $0.02 per request, consistent with the platform's advertised flat pricing of $0.02/request across all endpoints. Payment is made via the x402 "exact" scheme, and the endpoint accepts POST requests.

The platform advertises no API keys, no rate limits, and instant access. Documentation pages (`/docs`, `/pricing`, `/api`, `/README`) all returned only a "Connect wallet" prompt with no substantive content, so the actual response schema and detailed behavior of this particular balance endpoint remain undocumented. The endpoint is live (402 challenge confirmed), but without example responses or an OpenAPI spec, the exact data returned is unknown.

Capabilities

x402-paymentusdc-settlementbase-networkper-call-pricingaccount-balancepost-methodno-api-key

Use cases

  • —Querying account balance data behind a micropayment wall
  • —Integrating pay-per-call balance lookups into agent workflows
  • —Demonstrating x402 protocol payment flows on Base

Fit

Best for

  • —Agents or services that need on-demand account balance data without API key management
  • —Developers experimenting with x402 payment-gated APIs
  • —Micropayment-based access to financial data endpoints

Not for

  • —Users who need detailed API documentation or response schemas before integrating
  • —High-volume consumers who would prefer subscription-based pricing over per-call fees
  • —Anyone needing non-USDC or non-Base-network payment options

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/accounts/14/balance \
  -H "X-PAYMENT: <x402-payment-token>" \
  -H "Content-Type: application/json"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/accounts/14/balance
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.35/ 1.00

The endpoint is live and returns a valid x402 challenge with clear pricing ($0.02 USDC on Base). However, there is no OpenAPI spec, no documentation beyond a wallet-connect prompt, no example responses, and the purpose of this specific 'accounts/14/balance' path is unexplained. Effectively a stub listing.

Warnings

  • —No OpenAPI or schema documentation available — all doc pages return only 'Connect wallet'
  • —The exact response format and data returned by this endpoint are unknown
  • —The path '/api/v1/accounts/14/balance' includes a hardcoded account ID (14); unclear if this is parameterizable
  • —Platform lists many endpoints but none have documented schemas or example responses

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 00:18:36Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-28

Agent access

JSONhttps://clawmart.sh/api/listings/QzDbAy
x402-gated account balance endpoint on Base, paid per-call in USDC. — Clawmart · Clawmart